<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/

namespace phpbb\notification\type;

/**
* Topic notifications class
* This class handles notifications for new topics
*/

class topic extends \phpbb\notification\type\base
{
	/**
	* Get notification type name
	*
	* @return string
	*/
	public function get_type()
	{
		return 'notification.type.topic';
	}

	/**
	* Language key used to output the text
	*
	* @var string
	*/
	protected $language_key = 'NOTIFICATION_TOPIC';

	/**
	* Inherit notification read status from topic.
	*
	* @var bool
	*/
	protected $inherit_read_status = true;

	/**
	* Notification option data (for outputting to the user)
	*
	* @var bool|array False if the service should use it's default data
	* 					Array of data (including keys 'id', 'lang', and 'group')
	*/
	static public $notification_option = array(
		'lang'	=> 'NOTIFICATION_TYPE_TOPIC',
		'group'	=> 'NOTIFICATION_GROUP_POSTING',
	);

	/** @var \phpbb\user_loader */
	protected $user_loader;

	/** @var \phpbb\config\config */
	protected $config;

	public function set_config(\phpbb\config\config $config)
	{
		$this->config = $config;
	}

	public function set_user_loader(\phpbb\user_loader $user_loader)
	{
		$this->user_loader = $user_loader;
	}

	/**
	* Is available
	*/
	public function is_available()
	{
		return $this->config['allow_forum_notify'];
	}

	/**
	* Get the id of the item
	*
	* @param array $post The data from the post
	* @return int The topic id
	*/
	static public function get_item_id($post)
	{
		return (int) $post['topic_id'];
	}

	/**
	* Get the id of the parent
	*
	* @param array $post The data from the post
	* @return int The forum id
	*/
	static public function get_item_parent_id($post)
	{
		return (int) $post['forum_id'];
	}

	/**
	* Find the users who want to receive notifications
	*
	* @param array $topic Data from the topic
	* @param array $options Options for finding users for notification
	*
	* @return array
	*/
	public function find_users_for_notification($topic, $options = array())
	{
		$options = array_merge(array(
			'ignore_users'			=> array(),
		), $options);

		$users = array();

		$sql = 'SELECT user_id
			FROM ' . FORUMS_WATCH_TABLE . '
			WHERE forum_id = ' . (int) $topic['forum_id'] . '
				AND notify_status = ' . NOTIFY_YES . '
				AND user_id <> ' . (int) $topic['poster_id'];
		$result = $this->db->sql_query($sql);
		while ($row = $this->db->sql_fetchrow($result))
		{
			$users[] = (int) $row['user_id'];
		}
		$this->db->sql_freeresult($result);

		return $this->get_authorised_recipients($users, $topic['forum_id'], $options);
	}

	/**
	* Get the user's avatar
	*/
	public function get_avatar()
	{
		return $this->user_loader->get_avatar($this->get_data('poster_id'), false, true);
	}

	/**
	* Get the HTML formatted title of this notification
	*
	* @return string
	*/
	public function get_title()
	{
		if ($this->get_data('post_username'))
		{
			$username = $this->get_data('post_username');
		}
		else
		{
			$username = $this->user_loader->get_username($this->get_data('poster_id'), 'no_profile');
		}

		return $this->language->lang(
			$this->language_key,
			$username
		);
	}

	/**
	* Get the HTML formatted reference of the notification
	*
	* @return string
	*/
	public function get_reference()
	{
		return $this->language->lang(
			'NOTIFICATION_REFERENCE',
			censor_text($this->get_data('topic_title'))
		);
	}

	/**
	* Get the forum of the notification reference
	*
	* @return string
	*/
	public function get_forum()
	{
		return $this->language->lang(
			'NOTIFICATION_FORUM',
			$this->get_data('forum_name')
		);
	}

	/**
	* Get email template
	*
	* @return string|bool
	*/
	public function get_email_template()
	{
		return 'newtopic_notify';
	}

	/**
	* Get email template variables
	*
	* @return array
	*/
	public function get_email_template_variables()
	{
		$board_url = generate_board_url();

		if ($this->get_data('post_username'))
		{
			$username = $this->get_data('post_username');
		}
		else
		{
			$username = $this->user_loader->get_username($this->get_data('poster_id'), 'username');
		}

		return array(
			'AUTHOR_NAME'				=> htmlspecialchars_decode($username, ENT_COMPAT),
			'FORUM_NAME'				=> htmlspecialchars_decode($this->get_data('forum_name'), ENT_COMPAT),
			'TOPIC_TITLE'				=> htmlspecialchars_decode(censor_text($this->get_data('topic_title')), ENT_COMPAT),

			'U_TOPIC'					=> "{$board_url}/viewtopic.{$this->php_ext}?t={$this->item_id}",
			'U_VIEW_TOPIC'				=> "{$board_url}/viewtopic.{$this->php_ext}?t={$this->item_id}",
			'U_FORUM'					=> "{$board_url}/viewforum.{$this->php_ext}?f={$this->item_parent_id}",
			'U_STOP_WATCHING_FORUM'		=> "{$board_url}/viewforum.{$this->php_ext}?uid={$this->user_id}&f={$this->item_parent_id}&unwatch=forum",
		);
	}

	/**
	* Get the url to this item
	*
	* @return string URL
	*/
	public function get_url()
	{
		return append_sid($this->phpbb_root_path . 'viewtopic.' . $this->php_ext, "t={$this->item_id}");
	}

	/**
	* Users needed to query before this notification can be displayed
	*
	* @return array Array of user_ids
	*/
	public function users_to_query()
	{
		return array($this->get_data('poster_id'));
	}

	/**
	* Pre create insert array function
	* This allows you to perform certain actions, like run a query
	* and load data, before create_insert_array() is run. The data
	* returned from this function will be sent to create_insert_array().
	*
	* @param array $post Post data from submit_post
	* @param array $notify_users Notify users list
	* 		Formatted from find_users_for_notification()
	* @return array Whatever you want to send to create_insert_array().
	*/
	public function pre_create_insert_array($post, $notify_users)
	{
		if (!count($notify_users) || !$this->inherit_read_status)
		{
			return array();
		}

		$tracking_data = array();
		$sql = 'SELECT user_id, mark_time FROM ' . TOPICS_TRACK_TABLE . '
			WHERE topic_id = ' . (int) $post['topic_id'] . '
				AND ' . $this->db->sql_in_set('user_id', array_keys($notify_users));
		$result = $this->db->sql_query($sql);
		while ($row = $this->db->sql_fetchrow($result))
		{
			$tracking_data[$row['user_id']] = $row['mark_time'];
		}
		$this->db->sql_freeresult($result);

		return $tracking_data;
	}

	/**
	* {@inheritdoc}
	*/
	public function create_insert_array($post, $pre_create_data = array())
	{
		$this->set_data('poster_id', $post['poster_id']);

		$this->set_data('topic_title', $post['topic_title']);

		$this->set_data('post_username', (($post['poster_id'] == ANONYMOUS) ? $post['post_username'] : ''));

		$this->set_data('forum_name', $post['forum_name']);

		$this->notification_time = $post['post_time'];

		// Topics can be "read" before they are public (while awaiting approval).
		// Make sure that if the user has read the topic, it's marked as read in the notification
		if ($this->inherit_read_status && isset($pre_create_data[$this->user_id]) && $pre_create_data[$this->user_id] >= $this->notification_time)
		{
			$this->notification_read = true;
		}

		parent::create_insert_array($post, $pre_create_data);
	}
}
